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MR. RONALD GUANGHUI YU MD
NPI 1225666506
Emergency Medicine in Baltimore, MD

Active since March 31, 2020PECOS Enrolled
22 S GREENE ST, BALTIMORE, MD 21201(646) 573-6777 Get Directions Write a Review

NPPES record last updated: August 2, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 2, 2024, Jun 22, 2023, Mar 31, 2020 (3 updates tracked since 2020).

About Mr. Ronald Guanghui Yu Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. RONALD GUANGHUI YU MD (NPI 1225666506) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D0100030) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1225666506
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameMR. RONALD GUANGHUI YUCredential: MD
Location Address22 S GREENE STBaltimore, MD 21201-1544
Mailing Address110 S Paca St Fl 6Baltimore, MD 21201-1642 · (646) 573-6777
Phone(646) 573-6777
Sole ProprietorNo
Enumeration DateMarch 31, 2020
Last NPPES UpdateAugust 2, 20243 updates tracked since enumeration
NPPES CertifiedAugust 2, 2024
✔ NPI 1225666506 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in MD · D0100030✔ Licensed in NY · 321771
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
22 S GREENE ST, Baltimore, MD 21201
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Secondary Practice Locations 2

Location 1101 Nicolls Rd Rm 50Stony Brook, NY 11794-0001 · Phone (631) 444-3880
Location 2327 Beach 19th StFar Rockaway, NY 11691-4423 · Phone (646) 573-6777

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Ronald Guanghui Yu Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Ronald Yu reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Maryland Emergency Medicine Associates, PA
Same address
Emergency Medicine
22 S GREENE ST
Baltimore, MD 21201
  • Reassigned Medicare billing, Maryland enrollment
  • 234 clinicians in this Medicare group
NPI 1144271743 (410) 328-5793
Emergency Medicine Associates PA PC
9.8 mi
Internal Medicine
5401 OLD COURT RD
Randallstown, MD 21133
  • Reassigned Medicare billing, Maryland enrollment
  • Medicare enrollment name: Emergency Medicine Associates P.A., P.C.
  • 729 clinicians in this Medicare group
NPI 1043175375 (330) 493-4443
Mep Health, LLC
34 mi
Emergency Medicine
9901 MEDICAL CENTER DR
Rockville, MD 20850
  • Reassigned Medicare billing, Maryland enrollment
  • 301 clinicians in this Medicare group
NPI 1164483558 (330) 493-4443

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
85 services82 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
38 services37 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
28 services25 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
16 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21201 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.08 typical visit price
range $60.73 – $183.44
Typical copayment $23.52 (range $15.18 – $45.86)
Most-billed visit code 99203
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. LEONARD ANANG SOWAH M.D.
Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (410) 706-4619
VISHAL BHATNAGAR MD
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, MEDICINE, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-6110
NANCE J FOX P.A.-C
Physician Assistant (Medical)
22 S GREENE ST, G2K36
BALTIMORE, MD 21201
Baltimore City (410) 328-1170
HILARY TAMARA WOLF MD
Pediatrics (Adolescent Medicine)
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (410) 328-7373
MS. LINDSAY BREAM O'MEARA CRNP
Nurse Practitioner (Acute Care)
22 S GREENE ST, SUITE S4D07
BALTIMORE, MD 21201
Baltimore City (410) 328-3365
NORA T OLIVER M.D., M.P.H.
Student in an Organized Health Care Education/Training Program
22 S GREENE ST, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-5756
SHOSHANA JO WEINER
Internal Medicine
22 S GREENE ST
BALTIMORE, MD 21201
Baltimore City (617) 214-1332
JENNA VANLIERE CANZONIERO M.D.
Internal Medicine
22 S GREENE ST, N3E09
BALTIMORE, MD 21201
Baltimore City (410) 328-5756

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ronald Yu's NPI number?

The NPI number for Ronald Yu is 1225666506. It was assigned to this individual provider in the NPPES registry on March 31, 2020.

Where is Ronald Yu located?

Ronald Yu practices at 22 S Greene St, Baltimore, MD 21201. The listed phone number is (646) 573-6777.

What is Ronald Yu's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Ronald Yu enrolled in Medicare?

Yes. Ronald Yu is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ronald Yu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Yu reassigns Medicare benefits to 3 organizations: University Of Maryland Emergency Medicine Associates, PA (Baltimore, MD), Emergency Medicine Associates PA PC (Randallstown, MD) and Mep Health, LLC (Rockville, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ronald Yu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Ronald Yu was last updated on August 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.